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carbotech pad choice

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Old Jun 16, 2006 | 06:18 PM
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Default carbotech pad choice

I've heard people talk about running XP10s in the front and XP8s in the rear. Any particular reason why? Is it a bias thing or is it just that they had problems with XP8 in the front?
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Old Jun 17, 2006 | 06:57 AM
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I don't think it has anything to do with bias. The only reason I can think of is expected operating temps. The XP10 has a higher range of allowable operating temps. I'd look up the exact numbers, but I can't get my browser to work properly on the Carbotech site.
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Old Jun 17, 2006 | 10:44 AM
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why not the panther + ?
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Old Jun 17, 2006 | 12:19 PM
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Originally Posted by boyguan,Jun 17 2006, 11:44 AM
why not the panther + ?
Lower temperature pad. Works fine for beginners; that's what I used for a long time.
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Old Jun 17, 2006 | 02:21 PM
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Straight from the Carbotech website:

XP10 (F=$158, R=$119)
- Max operating temp -> 1600F (no low range listed)
- Coefficient of friction -> well above 0.6 (their words)

XP8 (F=$147, R=$109)
- Operating temp range -> 250F to 1350F
- Coefficient of friction -> 0.58 to 0.6

So...it could be bias related I guess. XP8 rear set is only $10 cheaper than XP10, but may be more effective in a lower operating range.
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Old Jun 19, 2006 | 07:48 AM
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I have used XP10/XP8s. The XP10 is just overkill in the rear. The pads will work best in their ideal temp range and the 10s in front and 8 in back get pretty close to that. If you put 10 in back, they will not get as hot as the 10s in front so the 8 in the rear work better. Also, the frict. coeff. is pretty high on the 10s so in the rear it can cause premature lockup.
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Old Jun 19, 2006 | 08:06 AM
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Originally Posted by TubeDriver,Jun 19 2006, 08:48 AM
I have used XP10/XP8s. The XP10 is just overkill in the rear. The pads will work best in their ideal temp range and the 10s in front and 8 in back get pretty close to that. If you put 10 in back, they will not get as hot as the 10s in front so the 8 in the rear work better. Also, the frict. coeff. is pretty high on the 10s so in the rear it can cause premature lockup.
Thanks. This last set I've been running 8s/8s. Seemed to be working fine. I do have front brake ducting, and I think my fronts run about the same as the rears in temp. I guess I need to use some thermal paint and find out for sure.
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Old Jun 19, 2006 | 08:16 AM
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Carbotech recommends a lesser pad in the back (to me anyway) so, there's no hint of the rear locking before the front. I believe they recommended XP10 F and Panther+ in the rear. I had no problems with that and no rear lockup issues even under braking heavy enough for the rear to get squirly.
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Old Jun 19, 2006 | 08:23 AM
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Originally Posted by Ek9,Jun 19 2006, 09:16 AM
Carbotech recommends a lesser pad in the back (to me anyway) so, there's no hint of the rear locking before the front. I believe they recommended XP10 F and Panther+ in the rear. I had no problems with that and no rear lockup issues even under braking heavy enough for the rear to get squirly.
Well I have ABS in my car, so I'm not too worried about that. If I had a race car with no ABS, it would be a different story.
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Old Jun 19, 2006 | 09:50 AM
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Originally Posted by CRDMS1,Jun 17 2006, 09:57 AM
I don't think it has anything to do with bias. The only reason I can think of is expected operating temps. The XP10 has a higher range of allowable operating temps. I'd look up the exact numbers, but I can't get my browser to work properly on the Carbotech site.
+1

panther plus work fine for guys starting out or if you run street tires.

I love the carbotech's, work great, and I can live with the dust (hawk dust eats through wheels)
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